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Three crops that contribute maximum to global food grain production are

1. Wheat, rice and maize
2. Wheat, rice and barley
3. Wheat, maize and sorghum
4. Rice, maize and sorghum

Correct answer: Wheat, rice and maize

Solution

Wheat, rice, and maize are the three most produced food grains worldwide, so together they contribute the largest share of global grain output. Barley and sorghum are important crops, but their total production is lower than maize and rice.

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